Personally I am going to hold all fundamental projects in my portfolio. Among them is Polkadot, Matic, BNB, Near, Solana, Cordano, and of course ETH and Bitcoin. I can't believe that they will ever be abandoned as they are widely used because they solve different actual problems. They will experience a drawdown first because of bear trend, but I am sure that they will continue being used then and they will pump.